Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi
Leachate from municipal landfills of the city is often contaminated heavily, especially for parameters such as organic components, heavy metals, microorganisms. However, leachate also contains amounts of valuable nutrients (e.g. N, P, K) which can be used for agriculture as fertilizers. Precipitated...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Babol Noshirvani University of Technology
2012-01-01
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| Series: | Iranica Journal of Energy and Environment |
| Subjects: | |
| Online Access: | http://www.ijee.net/Journal/ijee/vol3/no5/6.pdf |
| _version_ | 1797231022180401152 |
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| author | Nguyen Manh Khai Hoang Thi Quynh Trang |
| author_facet | Nguyen Manh Khai Hoang Thi Quynh Trang |
| author_sort | Nguyen Manh Khai |
| collection | DOAJ |
| description | Leachate from municipal landfills of the city is often contaminated heavily, especially for parameters such as organic components, heavy metals, microorganisms. However, leachate also contains amounts of valuable nutrients (e.g. N, P, K) which can be used for agriculture as fertilizers. Precipitated of N and P in the form of struvite (MgNH4PO4.6H2O) might be applied as a technique for removal a huge amount of N as well as P in wastewater. This study investigated the recovery ability of N, P in leachate from Nam Son municipal landfill of Hanoi city. Different pH values, anaerobic time and stoichiometric Mg2+: NH4+: PO43- was tested to determine the optimal conditions for precipitating struvite. The effect of pH on the forming of struvite was between pH 9 to 11. The results showed that nutrients in landfill leachate could be recovered with the optimum pH around 9.5 and the optimum Mg2+: NH4+: PO43- molar ratio as 1.15: 1: 1. With the anaerobic interval of 21 days, COD value in landfill leachate was decreased to 60%, the retrieval reached 80.6% for nitrogen and 82.7% for phosphorus. According to estimates, with the application of struvite precipitation technique, the average annual retrieval amount of NH4+ and PO43- can reach 263 tons and 25 tons, respectively. |
| first_indexed | 2024-04-24T15:37:46Z |
| format | Article |
| id | doaj.art-ce48b8b7c17c44448bda2c664144602e |
| institution | Directory Open Access Journal |
| issn | 2079-2115 2079-2123 |
| language | English |
| last_indexed | 2024-04-24T15:37:46Z |
| publishDate | 2012-01-01 |
| publisher | Babol Noshirvani University of Technology |
| record_format | Article |
| series | Iranica Journal of Energy and Environment |
| spelling | doaj.art-ce48b8b7c17c44448bda2c664144602e2024-04-02T01:26:46ZengBabol Noshirvani University of TechnologyIranica Journal of Energy and Environment2079-21152079-21232012-01-013Special Issue on Environmental Technology3236Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, HanoiNguyen Manh KhaiHoang Thi Quynh TrangLeachate from municipal landfills of the city is often contaminated heavily, especially for parameters such as organic components, heavy metals, microorganisms. However, leachate also contains amounts of valuable nutrients (e.g. N, P, K) which can be used for agriculture as fertilizers. Precipitated of N and P in the form of struvite (MgNH4PO4.6H2O) might be applied as a technique for removal a huge amount of N as well as P in wastewater. This study investigated the recovery ability of N, P in leachate from Nam Son municipal landfill of Hanoi city. Different pH values, anaerobic time and stoichiometric Mg2+: NH4+: PO43- was tested to determine the optimal conditions for precipitating struvite. The effect of pH on the forming of struvite was between pH 9 to 11. The results showed that nutrients in landfill leachate could be recovered with the optimum pH around 9.5 and the optimum Mg2+: NH4+: PO43- molar ratio as 1.15: 1: 1. With the anaerobic interval of 21 days, COD value in landfill leachate was decreased to 60%, the retrieval reached 80.6% for nitrogen and 82.7% for phosphorus. According to estimates, with the application of struvite precipitation technique, the average annual retrieval amount of NH4+ and PO43- can reach 263 tons and 25 tons, respectively.http://www.ijee.net/Journal/ijee/vol3/no5/6.pdfLandfillLeachateNutrientsRetrievalStruvite. |
| spellingShingle | Nguyen Manh Khai Hoang Thi Quynh Trang Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi Iranica Journal of Energy and Environment Landfill Leachate Nutrients Retrieval Struvite. |
| title | Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi |
| title_full | Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi |
| title_fullStr | Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi |
| title_full_unstemmed | Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi |
| title_short | Chemical Precipitation of Ammonia and Phosphatefrom Nam Son Landfill Leachate, Hanoi |
| title_sort | chemical precipitation of ammonia and phosphatefrom nam son landfill leachate hanoi |
| topic | Landfill Leachate Nutrients Retrieval Struvite. |
| url | http://www.ijee.net/Journal/ijee/vol3/no5/6.pdf |
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